The neutron electric dipole moment experiment at the Spallation Neutron Source
- Creators
- Leung, K. K. H.
- Ahmed, M.
- Alarcon, R.
- Aleksandrova, A.
- Baeßler, S.
- Barrón-Palos, L.
- Bartoszek, L.
- Beck, D. H.
- Behzadipour, M.
- Bessuille, J.
- Blatnik, M. A.
- Broering, M.
- Broussard, L. J.
- Busch, M.
- Carr, R.
- Chu, P.-H.
- Cianciolo, V.
- Clayton, S. M.
- Cooper, M. D.
- Crawford, C.
- Currie, S.A.
- Daurer, C.
- Dipert, R.
- Dow, K.
- Dutta, D.
- Efremenko, Y.
- Erickson, C. B.
-
Filippone, B. W.
- Fomin, N.
- Gao, H.
- Golub, R.
- Gould, C. R.
- Greene, G. L.
- Haase, D. G.
- Hasell, D.
- Hawari, A. I.
- Hayden, M. E.
- Holley, A. T.
- Holt, R. J.
- Huffman, P. R.
- Ihloff, E.
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Ito, T. M.
- Kelsey, J.
- Kim, Y. J.
- Korobkina, E.
- Korsch, W.
- Lamoreaux, S. K.
- Leggett, E.
- Lipman, A.
- Liu, C.-Y.
- Long, J.
- MacDonald, S. W. T.
- Makela, M.
- Matlashov, A.
- Maxwell, J.
- McCrea, M.
- Mendenhall, M.
- Meyer, H. O.
- Milner, R.
- Mueller, P.
- Nouri, N.
- O'Shaughnessy, C. M.
- Osthelder, C.
- Peng, J.-C.
- Penttila, S.
- Phan, N. S.
- Plaster, B.
- Ramsey, J.
- Rao, T.
- Redwine, R. P.
- Reid, A.
- Saftah, A.
- Seidel, G. M.
- Silvera, I. F.
- Slutsky, S.
- Smith, E.
- Snow, W. M.
- Sondheim, W.
- Sosothikul, S.
- Stanislaus, T. D. S.
-
Sun, X.
-
Swank, C. M.
- Tang, Z.
- Tavakoli Dinani, R.
- Tsentalovich, E.
- Vidal, C.
- Wei, W.
- White, C. R.
- Williamson, S. E.
- Yang, L.
- Yao, W.
- Young, A. R.
Abstract
Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS) will implement the scheme of Golub & Lamoreaux [Phys. Rep., 237, 1 (1994)]. The unique properties of combining polarized ultracold neutrons, polarized ³He, and superfluid ⁴He will be exploited to provide a sensitivity to ∼ 10⁻²⁸e · cm. Our cryogenic apparatus will deploy two small (3 L) measurement cells with a high density of ultracold neutrons produced and spin analyzed in situ. The electric field strength, precession time, magnetic shielding, and detected UCN number will all be enhanced compared to previous room temperature Ramsey measurements. Our 3He co-magnetometer offers unique control of systematic effects, in particular the Bloch-Siegert induced false EDM. Furthermore, there will be two distinct measurement modes: free precession and dressed spin. This will provide an important self-check of our results. Following five years of "critical component demonstration," our collaboration transitioned to a "large scale integration" phase in 2018. An overview of our measurement techniques, experimental design, and brief updates are described in these proceedings.
Additional Information
© 2020 The Authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/). Published online 12 December 2019. This work was supported in part by the U.S. Department of Energy under grants DE-AC02-06CH11357, DE-AC05-00OR22725, DE-AC52-06NA25396, DE-FG02-94ER40818, DE-FG02-97ER41042, DE-FG02-99ER41101, DE-SC0014622, DESC0008107, DE-SC0005367, DE-FG02-88ER40416, and 2017 LANLEEDM, and the U.S. National Science Foundation under grants 1306547, 1205977, 1506459, 1812340, 1440011, 1506416, 1822502, 1812377, and 1506451.Attached Files
Published - epjconf-ppns2019_02005.pdf
Submitted - 1903.02700.pdf
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Additional details
- Eprint ID
- 101787
- Resolver ID
- CaltechAUTHORS:20200309-130019180
- Department of Energy (DOE)
- DE-AC02-06CH11357
- Department of Energy (DOE)
- DE-AC05-00OR22725
- Department of Energy (DOE)
- DE-AC52-06NA25396
- Department of Energy (DOE)
- DE-FG02-94ER40818
- Department of Energy (DOE)
- DE-FG02-97ER41042
- Department of Energy (DOE)
- DE-FG02-99ER41101
- Department of Energy (DOE)
- DE-SC0014622
- Department of Energy (DOE)
- DE-SC0008107
- Department of Energy (DOE)
- DE-SC0005367
- Department of Energy (DOE)
- DE-FG02-88ER40416
- 2017 LANLEEDM
- NSF
- PHY-1306547
- NSF
- PHY-1205977
- NSF
- PHY-1506459
- NSF
- PHY-1812340
- NSF
- PHY-1440011
- NSF
- PHY-1506416
- NSF
- PHY-1822502
- NSF
- PHY-1812377
- NSF
- PHY-1506451
- Created
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2020-03-09Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field